 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.core;

 import java.io.IOException ;
 import java.io.InputStream ;
 import java.net.MalformedURLException ;
 import java.net.URL ;
 import java.util.Date ;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.update.core.BaseSiteFactory;
 import org.eclipse.update.core.ISite;
 import org.eclipse.update.core.ISiteFactoryExtension;
 import org.eclipse.update.core.Site;
 import org.eclipse.update.core.SiteFeatureReferenceModel;
 import org.eclipse.update.core.Utilities;
 import org.eclipse.update.core.model.InvalidSiteTypeException;
 import org.eclipse.update.core.model.SiteModelFactory;
 import org.eclipse.update.internal.core.connection.ConnectionFactory;
 import org.eclipse.update.internal.core.connection.IResponse;
 import org.eclipse.update.internal.model.SiteWithTimestamp;

 /**
  * An update site factory.
  *
  */
 public class SiteURLFactory extends BaseSiteFactory implements ISiteFactoryExtension {
     
     /*
      * For backward compatibility.
      */
     public ISite createSite(URL url) throws CoreException, InvalidSiteTypeException {
         return createSite(url, null);
     }
     /*
      * @see ISiteFactory#createSite(URL, boolean)
      *
      * the URL can be of the following form
      * 1 protocol://...../
      * 2 protocol://.....
      * 3 protocol://..../site.xml
      *
      * 1 If the file of the file of teh url ends with '/', attempt to open the stream.
      * if it fails, add site.xml and attempt to open the stream
      *
      * 2 attempt to open the stream
      * fail
      * add '/site.xml' and attempt to open the stream
      * sucess
      * attempt to parse, if it fails, add '/site.xml' and attempt to open teh stream
      *
      * 3 open the stream
      */
     public ISite createSite(URL url, IProgressMonitor monitor) throws CoreException, InvalidSiteTypeException {
         Site site = null;
         InputStream siteStream = null;
     
         try {
             SiteURLContentProvider contentProvider = new SiteURLContentProvider(url);
     
             URL resolvedURL = URLEncoder.encode(url);
             IResponse response = ConnectionFactory.get(resolvedURL);
             UpdateManagerUtils.checkConnectionResult(response, resolvedURL);
             siteStream = response.getInputStream(monitor);
             // the stream can be null if the user cancels the connection
 if (siteStream==null) return null;

             SiteModelFactory factory = this;
             site = (Site) factory.parseSite(siteStream);
             //System.out.println(site.getClass().getCanonicalName());
 site.setSiteContentProvider(contentProvider);
             contentProvider.setSite(site);
             site.resolve(url, url);
             site.markReadOnly();
             /*SiteWithTimestamp siteWithTimestamp = new SiteWithTimestamp(site);
             siteWithTimestamp.setTimestamp( new Date(response.getLastModified()));
             site = siteWithTimestamp;*/
             ((SiteWithTimestamp)site).setTimestamp( new Date (response.getLastModified()));
         } catch (MalformedURLException e) {
             throw Utilities.newCoreException(NLS.bind(Messages.SiteURLFactory_UnableToCreateURL, (new String [] { url == null ? "" : url.toExternalForm() })), e); //$NON-NLS-1$
 } catch (IOException e) {
             throw Utilities.newCoreException(NLS.bind(Messages.SiteURLFactory_UnableToAccessSiteStream, (new String [] { url == null ? "" : url.toExternalForm() })), ISite.SITE_ACCESS_EXCEPTION, e); //$NON-NLS-1$
 } finally {
             if (siteStream != null) {
                 try {
                     siteStream.close();
                 } catch (IOException e) {
                 }
             }
         }
         return site;
     }

     /*
      * @see SiteModelFactory#canParseSiteType(String)
      */
     public boolean canParseSiteType(String type) {
         return (super.canParseSiteType(type) || SiteURLContentProvider.SITE_TYPE.equalsIgnoreCase(type));
     }
     /* (non-Javadoc)
      * @see org.eclipse.update.core.BaseSiteFactory#createFeatureReferenceModel()
      */
     public SiteFeatureReferenceModel createFeatureReferenceModel() {
         return new UpdateSiteFeatureReference();
     }

 }

